Python & Aptitude Quiz 1

1. What is the output of the given code?

• [2, 3, 4]
• [1, 2, 3, 4, 5]
• [1, 2, 3]
• [1, 2, 3, 4]

2. Which of the following is the correct way to open a file for writing in binary mode in Python?

• open('filename', 'w')
• open('filename', 'rb')
• open('filename', 'a')
• open('filename', 'wb')

3. What will be the output of `print(my_set)` after this code is executed?

• {1, 2, 3, 4}
• {1, 2, 3}
• {2, 3, 4, 5}
• {1, 2, 3, 4, 4}

4. What is a decorator in Python?

• A decorator is a method for creating classes in Python.
• A decorator is a built-in data type in Python.
• A decorator is a type of variable in Python.
• A decorator is a function that wraps another function to extend its behavior.

5. What does the `*args` syntax in a function definition allow you to do?

• It allows a function to accept only keyword arguments.
• It restricts the number of arguments a function can take.
• It enables a function to return multiple values.
• It allows a function to accept a variable number of positional arguments.

6. What is the primary difference between a list and a tuple?

• The primary difference is that lists are mutable and tuples are immutable.
• Lists are faster than tuples in all operations.
• Tuples are used for storing data, while lists are used for functions.
• Lists can contain only numbers, while tuples can contain any data type.

7. What is the purpose of the `yield` keyword in Python?

• The `yield` keyword is used to return a value from a function immediately.
• The `yield` keyword is for defining a class in Python.
• The `yield` keyword is used to create a constant variable in Python.
• The purpose of the `yield` keyword is to define a generator that can produce a sequence of values over time.

8. What is the output of the following list comprehension?

• [1, 2, 3, 4, 5]
• [0, 1, 2, 3, 4]
• [0, 1, 8, 27, 64]
• [0, 1, 4, 9, 16]

9. What does the `super()` function do in Python OOP?

• The `super()` function creates a new instance of a class.
• The `super()` function is used to delete a parent class method.
• The `super()` function initializes a class without inheritance.
• The `super()` function allows access to methods from a parent class.

10. Which of the following correctly describes a lambda function?

• A built-in function for sorting lists.
• A type of variable used in loops.
• A function that always returns None.
• A small anonymous function defined with 'lambda'.